TopBJJ Index Youth

TopBJJ Index

Search TopBJJ Index
Language selector
Menu
AM

Sévan DERDERIAN

IMPACT AIX-EN-PROVENCE

W–L
6–0
Won and lost rating-eligible matches in the past 12 months.
Gi
1,443
Rating based on Gi matches in the past 12 months.
No-Gi
-
Rating based on No-Gi matches in the past 12 months.
Current form
6–0
Results from the ten most recent rating-eligible matches.
Opponents
6
Unique opponents faced in rating-eligible matches in the past 12 months.

Indexed career

Matches

8
Indexed competition matches
Date Opponent Result Event Division
2026-05-31 Younes Abdelfettah
Win
OPEN EUROPE JIU-JITSU GI and NO-GI CEJJS 2026 Gi · Boys Gi / Grey / Teen I (13yrs) / -36,2 kg
2026-05-31 Sajaddine Barkat
Win
OPEN EUROPE JIU-JITSU GI and NO-GI CEJJS 2026 Gi · Boys Gi / Grey / Teen I (13yrs) / -36,2 kg
2026-05-31 Louca Giappichelli
Win
OPEN EUROPE JIU-JITSU GI and NO-GI CEJJS 2026 Gi · Boys Gi / Grey / Teen I (13yrs) / -36,2 kg
2026-03-15 Ilo Tempier
Win
OPEN DE FRANCE CEJJS GI & NO-GI 2026 Gi · Boys Gi / Grey / Teen II (14yrs) / -40.3 kg
2025-10-26 Luna Kassem
Win
Open jiu-jitsu Sobreviver Gi & NO-GI Marseille 2025 Gi · Boys Gi / Grey / Junior I (10yrs) / -36,2 kg
2025-10-26 Camélia El Khalfioui
Win
Open jiu-jitsu Sobreviver Gi & NO-GI Marseille 2025 Gi · Boys Gi / Grey / Junior I (10yrs) / -36,2 kg
2025-03-02 Hamza Dridi
Loss
OPEN DE FRANCE CEJJS GI & NO-GI MARSEILLE 2025 Gi · Boys Gi / Grey / Junior I (10yrs) / -42.3 kg
2025-03-02 Tino Lubertacci
Win
OPEN DE FRANCE CEJJS GI & NO-GI MARSEILLE 2025 Gi · Boys Gi / Grey / Junior I (10yrs) / -42.3 kg

Calculation details

Rating breakdown for the past 12 months

See the published month-end rating and the rating-eligible matches added in each month. Open a month for details.

August 2026 No new matches Change 0 Rating 1,443

Rating-period composition

Rating matches
6 0
Record
6–0 Previous month 6–0
Opponents
6 0
Events
3 0

No matches were added or left the period. The change comes from the monthly revaluation of opponents across the full network.

July 2026 No new matches Change 0 Rating 1,443

Rating-period composition

Rating matches
6 0
Record
6–0 Previous month 6–0
Opponents
6 0
Events
3 0

No matches were added or left the period. The change comes from the monthly revaluation of opponents across the full network.

June 2026 No new matches Change 0 Rating 1,443

Rating-period composition

Rating matches
6 0
Record
6–0 Previous month 6–0
Opponents
6 0
Events
3 0

No matches were added or left the period. The change comes from the monthly revaluation of opponents across the full network.

May 2026 3 new matches Change +89 Rating 1,443

Rating-period composition

Rating matches
6 +3
Record
6–0 Previous month 3–0
Opponents
6 +3
Events
3 +1

New rating matches

This is a current what-if estimate: roughly how much the current rating changes when this match is omitted. These values cannot be added and therefore do not together explain the monthly change.
Win
OPEN EUROPE JIU-JITSU GI and NO-GI CEJJS 2026 Boys Gi / Grey / Teen I (13yrs) / -36,2 kg
Method Points 04:00 2–2
Marginal influence +18
Win
May 31, 2026 Sajaddine Barkat
OPEN EUROPE JIU-JITSU GI and NO-GI CEJJS 2026 Boys Gi / Grey / Teen I (13yrs) / -36,2 kg
Method Submission 01:21 7–0
Marginal influence +14
Win
OPEN EUROPE JIU-JITSU GI and NO-GI CEJJS 2026 Boys Gi / Grey / Teen I (13yrs) / -36,2 kg
Method Points 04:00 7–0
Marginal influence +16
April 2026 No new matches Change 0 Rating 1,354

Rating-period composition

Rating matches
3 0
Record
3–0 Previous month 3–0
Opponents
3 0
Events
2 0

No matches were added or left the period. The change comes from the monthly revaluation of opponents across the full network.

March 2026 1 new match · 2 left period Change +28 Rating 1,354

Rating-period composition

Rating matches
3 -1
Record
3–0 Previous month 3–1
Opponents
3 -1
Events
2 0

2 older matches left the 12-month period: 1 won and 1 lost. The rating is then recalculated across the full network, so the monthly change is not a sum of separate deductions.

New rating matches

This is a current what-if estimate: roughly how much the current rating changes when this match is omitted. These values cannot be added and therefore do not together explain the monthly change.
Win
March 15, 2026 Ilo Tempier
OPEN DE FRANCE CEJJS GI & NO-GI 2026 Boys Gi / Grey / Teen II (14yrs) / -40.3 kg
Method Decision 04:00 0–0
Marginal influence +30
February 2026 No new matches Change 0 Rating 1,326

Rating-period composition

Rating matches
4 0
Record
3–1 Previous month 3–1
Opponents
4 0
Events
2 0

No matches were added or left the period. The change comes from the monthly revaluation of opponents across the full network.

January 2026 No new matches Change 0 Rating 1,326

Rating-period composition

Rating matches
4 0
Record
3–1 Previous month 3–1
Opponents
4 0
Events
2 0

No matches were added or left the period. The change comes from the monthly revaluation of opponents across the full network.

December 2025 No new matches Change +5 Rating 1,326

Rating-period composition

Rating matches
4 0
Record
3–1 Previous month 3–1
Opponents
4 0
Events
2 0

No matches were added or left the period. The change comes from the monthly revaluation of opponents across the full network.

November 2025 No new matches Change 0 Rating 1,321

Rating-period composition

Rating matches
4 0
Record
3–1 Previous month 3–1
Opponents
4 0
Events
2 0

No matches were added or left the period. The change comes from the monthly revaluation of opponents across the full network.

October 2025 2 new matches Change +111 Rating 1,321

Rating-period composition

Rating matches
4 +2
Record
3–1 Previous month 1–1
Opponents
4 +2
Events
2 +1

New rating matches

This is a current what-if estimate: roughly how much the current rating changes when this match is omitted. These values cannot be added and therefore do not together explain the monthly change.
Win
October 26, 2025 Luna Kassem
Open jiu-jitsu Sobreviver Gi & NO-GI Marseille 2025 Boys Gi / Grey / Junior I (10yrs) / -36,2 kg
Method Points 03:00 0–0
Marginal influence +18
Win
October 26, 2025 Camélia El Khalfioui
Open jiu-jitsu Sobreviver Gi & NO-GI Marseille 2025 Boys Gi / Grey / Junior I (10yrs) / -36,2 kg
Method Points 03:00 0–0
Marginal influence +18
September 2025 No new matches Change 0 Rating 1,210

Rating-period composition

Rating matches
2 0
Record
1–1 Previous month 1–1
Opponents
2 0
Events
1 0

No matches were added or left the period. The change comes from the monthly revaluation of opponents across the full network.

Relevant matches
5
Official ranking percentile
Top 18%
Performance
34.9 pp above expectation

5 weighted matches against 6 different opponents across 3 events

Weighted win rate
100.0%
Expected win rate
65.1%
Average opponent rating
1,251
Repeated-opponent share
0.0%
Network connectivity
87.6%

Classification evidence

Why U14?

Within the published period from 2025-09-01 through 2026-08-31, only competition ages recorded at events in the calculation year determine this outcome, with at most one vote per event. Without such an age, the most recent unambiguous earlier competition age is projected to the calculation year; bracket evidence is the final fallback. The newest evidence breaks a tie.

Evidence outcome

  • U14 2 event votes Selected outcome

Registrations and outcomes

OPEN EUROPE JIU-JITSU GI and NO-GI CEJJS 2026
U14 · Counts
Boys Gi / Grey / Teen I (13yrs) / -36,2 kg
  • Competition age 12
  • Registered age: u14
  • Source category: u14
OPEN DE FRANCE CEJJS GI & NO-GI 2026
U14 · Counts
Boys Gi / Grey / Teen II (14yrs) / -40.3 kg
  • Competition age 12
  • Registered age: u16
  • Source category: u16
Open jiu-jitsu Sobreviver Gi & NO-GI Marseille 2025
Does not count
Boys Gi / Grey / Junior I (10yrs) / -36,2 kg
  • Competition age 11
  • Registered age: u12
  • Source category: u12

Classification evidence

Why ≤ 36 kg?

This outcome uses at most one unambiguous upper weight limit per completed ranking event from 2025-09-01 through 2026-08-31. Only the three most recent eligible events are considered, and the lightest verified upper limit is selected. A higher division is not treated as measured body weight.

Evidence outcome

  • ≤ 36 kg 2 competition events Selected outcome
  • ≤ 40 kg 1 competition event

Registrations and outcomes

OPEN EUROPE JIU-JITSU GI and NO-GI CEJJS 2026
≤ 36 kg · Counts as a competition event
Boys Gi / Grey / Teen I (13yrs) / -36,2 kg
  • Registered weight class: -36,2 kg
  • Source competition limit: -36,2 kg

3 matches in the rating period

OPEN DE FRANCE CEJJS GI & NO-GI 2026
≤ 40 kg · Counts as a competition event
Boys Gi / Grey / Teen II (14yrs) / -40.3 kg
  • Registered weight class: -40.3 kg
  • Source competition limit: -40.3 kg

1 match in the rating period

Open jiu-jitsu Sobreviver Gi & NO-GI Marseille 2025
≤ 36 kg · Counts as a competition event
Boys Gi / Grey / Junior I (10yrs) / -36,2 kg
  • Registered weight class: -36,2 kg
  • Source competition limit: -36,2 kg

2 matches in the rating period

Classification evidence

Why Grey?

This outcome uses the belt category of every rating-eligible match from 2025-09-01 through 2026-08-31. The most-fought category is selected; the newest evidence breaks a tie.

Evidence outcome

  • grey 6 matches in the rating period Selected outcome

Registrations and outcomes

OPEN EUROPE JIU-JITSU GI and NO-GI CEJJS 2026
grey · Counts as a match
Boys Gi / Grey / Teen I (13yrs) / -36,2 kg
  • Source belt category: grey

3 matches in the rating period

OPEN DE FRANCE CEJJS GI & NO-GI 2026
grey · Counts as a match
Boys Gi / Grey / Teen II (14yrs) / -40.3 kg
  • Source belt category: grey

1 match in the rating period

Open jiu-jitsu Sobreviver Gi & NO-GI Marseille 2025
grey · Counts as a match
Boys Gi / Grey / Junior I (10yrs) / -36,2 kg
  • Source belt category: grey

2 matches in the rating period